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DuerOS-Light-SDK-v1.1.0/duer-os-light/external/speex/libspeex/cb_search_bfin.h@47:9e361da97763, 2017-07-18 (annotated)

Committer:
TMBOY
Date:
Tue Jul 18 16:54:45 2017 +0800
Revision:
47:9e361da97763
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TMBOY 47:9e361da97763 1 /* Copyright (C) 2005 Analog Devices */
TMBOY 47:9e361da97763 2 /**
TMBOY 47:9e361da97763 3 @author Jean-Marc Valin
TMBOY 47:9e361da97763 4 @file cb_search_bfin.h
TMBOY 47:9e361da97763 5 @brief Fixed codebook functions (Blackfin version)
TMBOY 47:9e361da97763 6 */
TMBOY 47:9e361da97763 7 /*
TMBOY 47:9e361da97763 8 Redistribution and use in source and binary forms, with or without
TMBOY 47:9e361da97763 9 modification, are permitted provided that the following conditions
TMBOY 47:9e361da97763 10 are met:
TMBOY 47:9e361da97763 11
TMBOY 47:9e361da97763 12 - Redistributions of source code must retain the above copyright
TMBOY 47:9e361da97763 13 notice, this list of conditions and the following disclaimer.
TMBOY 47:9e361da97763 14
TMBOY 47:9e361da97763 15 - Redistributions in binary form must reproduce the above copyright
TMBOY 47:9e361da97763 16 notice, this list of conditions and the following disclaimer in the
TMBOY 47:9e361da97763 17 documentation and/or other materials provided with the distribution.
TMBOY 47:9e361da97763 18
TMBOY 47:9e361da97763 19 - Neither the name of the Xiph.org Foundation nor the names of its
TMBOY 47:9e361da97763 20 contributors may be used to endorse or promote products derived from
TMBOY 47:9e361da97763 21 this software without specific prior written permission.
TMBOY 47:9e361da97763 22
TMBOY 47:9e361da97763 23 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
TMBOY 47:9e361da97763 24 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
TMBOY 47:9e361da97763 25 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
TMBOY 47:9e361da97763 26 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
TMBOY 47:9e361da97763 27 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
TMBOY 47:9e361da97763 28 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
TMBOY 47:9e361da97763 29 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
TMBOY 47:9e361da97763 30 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
TMBOY 47:9e361da97763 31 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
TMBOY 47:9e361da97763 32 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
TMBOY 47:9e361da97763 33 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
TMBOY 47:9e361da97763 34 */
TMBOY 47:9e361da97763 35
TMBOY 47:9e361da97763 36 #define OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK
TMBOY 47:9e361da97763 37 void compute_weighted_codebook(const signed char *shape_cb, const spx_word16_t *r, spx_word16_t *resp, spx_word16_t *resp2, spx_word32_t *E, int shape_cb_size, int subvect_size, char *stack)
TMBOY 47:9e361da97763 38 {
TMBOY 47:9e361da97763 39 int i;
TMBOY 47:9e361da97763 40 for (i=0;i<shape_cb_size;i++)
TMBOY 47:9e361da97763 41 {
TMBOY 47:9e361da97763 42 __asm__ __volatile__ (
TMBOY 47:9e361da97763 43 "P0 = %0;\n\t"
TMBOY 47:9e361da97763 44 "LC0 = P0;\n\t"
TMBOY 47:9e361da97763 45 "P1 = %1;\n\t"
TMBOY 47:9e361da97763 46 "P2 = %2;\n\t"
TMBOY 47:9e361da97763 47 "P3 = %3;\n\t"
TMBOY 47:9e361da97763 48 "P0 = 1;\n\t"
TMBOY 47:9e361da97763 49 "L0 = 0;\n\t"
TMBOY 47:9e361da97763 50 "L1 = 0;\n\t"
TMBOY 47:9e361da97763 51 "R2 = 0;\n\t"
TMBOY 47:9e361da97763 52 "A1 = 0;\n\t"
TMBOY 47:9e361da97763 53 "LOOP outter%= LC0;\n\t"
TMBOY 47:9e361da97763 54 "LOOP_BEGIN outter%=;\n\t"
TMBOY 47:9e361da97763 55 "A0 = 0;\n\t"
TMBOY 47:9e361da97763 56 "P4 = P1;\n\t"
TMBOY 47:9e361da97763 57 "I1 = P2;\n\t"
TMBOY 47:9e361da97763 58 "R0 = B[P4++] (X) || R1.L = W[I1--];\n\t"
TMBOY 47:9e361da97763 59 "LOOP inner%= LC1 = P0;\n\t"
TMBOY 47:9e361da97763 60 "LOOP_BEGIN inner%=;\n\t"
TMBOY 47:9e361da97763 61 "A0 += R0.L*R1.L (IS) || R0 = B[P4++] (X) || R1.L = W[I1--];\n\t"
TMBOY 47:9e361da97763 62 "LOOP_END inner%=;\n\t"
TMBOY 47:9e361da97763 63 "R0 = A0;\n\t"
TMBOY 47:9e361da97763 64 "R0 >>>= 13;\n\t"
TMBOY 47:9e361da97763 65 "A1 += R0.L*R0.L (IS);\n\t"
TMBOY 47:9e361da97763 66 "W[P3++] = R0;\n\t"
TMBOY 47:9e361da97763 67 "P0 += 1;\n\t"
TMBOY 47:9e361da97763 68 "P2 += 2;\n\t"
TMBOY 47:9e361da97763 69 "LOOP_END outter%=;\n\t"
TMBOY 47:9e361da97763 70 "P4 = %4;\n\t"
TMBOY 47:9e361da97763 71 "R1 = A1;\n\t"
TMBOY 47:9e361da97763 72 "[P4] = R1;\n\t"
TMBOY 47:9e361da97763 73 :
TMBOY 47:9e361da97763 74 : "m" (subvect_size), "m" (shape_cb), "m" (r), "m" (resp), "m" (E)
TMBOY 47:9e361da97763 75 : "A0", "P0", "P1", "P2", "P3", "P4", "R0", "R1", "R2", "I0", "I1", "L0",
TMBOY 47:9e361da97763 76 "L1", "A0", "A1", "memory"
TMBOY 47:9e361da97763 77 #if !(__GNUC__ == 3)
TMBOY 47:9e361da97763 78 , "LC0", "LC1" /* gcc 3.4 doesn't know about LC registers */
TMBOY 47:9e361da97763 79 #endif
TMBOY 47:9e361da97763 80 );
TMBOY 47:9e361da97763 81 shape_cb += subvect_size;
TMBOY 47:9e361da97763 82 resp += subvect_size;
TMBOY 47:9e361da97763 83 E++;
TMBOY 47:9e361da97763 84 }
TMBOY 47:9e361da97763 85 }
TMBOY 47:9e361da97763 86
TMBOY 47:9e361da97763 87 #define OVERRIDE_TARGET_UPDATE
TMBOY 47:9e361da97763 88 static inline void target_update(spx_word16_t *t, spx_word16_t g, spx_word16_t *r, int len)
TMBOY 47:9e361da97763 89 {
TMBOY 47:9e361da97763 90 if (!len)
TMBOY 47:9e361da97763 91 return;
TMBOY 47:9e361da97763 92 __asm__ __volatile__
TMBOY 47:9e361da97763 93 (
TMBOY 47:9e361da97763 94 "I0 = %0;\n\t"
TMBOY 47:9e361da97763 95 "I1 = %1;\n\t"
TMBOY 47:9e361da97763 96 "L0 = 0;\n\t"
TMBOY 47:9e361da97763 97 "L1 = 0;\n\t"
TMBOY 47:9e361da97763 98 "R2 = 4096;\n\t"
TMBOY 47:9e361da97763 99 "LOOP tupdate%= LC0 = %3;\n\t"
TMBOY 47:9e361da97763 100 "LOOP_BEGIN tupdate%=;\n\t"
TMBOY 47:9e361da97763 101 "R0.L = W[I0] || R1.L = W[I1++];\n\t"
TMBOY 47:9e361da97763 102 "R1 = (A1 = R1.L*%2.L) (IS);\n\t"
TMBOY 47:9e361da97763 103 "R1 = R1 + R2;\n\t"
TMBOY 47:9e361da97763 104 "R1 >>>= 13;\n\t"
TMBOY 47:9e361da97763 105 "R0.L = R0.L - R1.L;\n\t"
TMBOY 47:9e361da97763 106 "W[I0++] = R0.L;\n\t"
TMBOY 47:9e361da97763 107 "LOOP_END tupdate%=;\n\t"
TMBOY 47:9e361da97763 108 :
TMBOY 47:9e361da97763 109 : "a" (t), "a" (r), "d" (g), "a" (len)
TMBOY 47:9e361da97763 110 : "R0", "R1", "R2", "A1", "I0", "I1", "L0", "L1"
TMBOY 47:9e361da97763 111 );
TMBOY 47:9e361da97763 112 }